Decreasing carbon method for producing high-purity silicon iron

Abstract

The invention belongs to the technology field of producing high-purity silicon iron, especially relates to a decreasing carbon method for producing high-purity silicon iron. The feature of this method is indicated that adds the burden as 0.9-1.1kg dolomite with the graininess smaller than 5mm, 0.4-0.6kg industry soda ash, 1.8-2.2kg iron concentrate with the graininess 1-5mm, 0.1-0.3kg industry common salt into the 100kg dinas rock charging stock, and forms into high-melting dross at the antapical half of the furnace. The invention can effectively account for the problem of decreasing carbon in producing high-purity silicon iron, and has the advantages of simple to be carried out, easy to be controlled, low cost of manufacture, steady and reliable product quality.

Description

1. Technical field: [0001] The invention belongs to the technical field of high-purity ferrosilicon production, in particular to a carbon reduction method for producing high-purity ferrosilicon. 2. Technical background: [0002] The production technology of high-purity ferrosilicon is the cutting-edge technology in the ferrosilicon production industry, and in the production of high-purity ferrosilicon, the carbon content requirements in high-purity ferrosilicon products used in the production of various high-quality steel are getting higher and higher. For example, the existing high-purity ferrosilicon has several specifications such as C<0.03%, C<0.015%, C<0.010%, and ultra-low carbon C<0.007%, but it is difficult to reduce carbon by using the existing carbon reduction methods. High production costs, unstable product quality and other defects. 3. Contents of the invention: [0003] The purpose of the present invention is to address the above-mentioned deficie...

AI Technical Summary

Problems solved by technology

[0002] The production technology of high-purity ferrosilicon is the cutting-edge technology in the ferrosilicon production industry, and in the production of high-purity ferrosilicon, the carbon content requirements in high-purity ferrosilicon products used in the production of various high-quality steel are getting higher and higher. For example, the existing high-purity ferrosilicon has several specifications such as C<0.03%, C<0.015%, C<0.010%, and ultra-low carbon C<0.007%, but it is difficult to reduce carbon by using the existing carbon reduction methods. High production cost, unstable product quality and other defects